package com.common.util;

import cn.hutool.core.date.SystemClock;
import com.common.config.FileParamConfig;
import com.common.enums.sys.OsTypeEnum;
import io.swagger.v3.oas.annotations.media.Schema;
import lombok.extern.slf4j.Slf4j;
import org.springframework.stereotype.Component;

import javax.imageio.ImageIO;
import java.awt.*;
import java.awt.geom.RoundRectangle2D;
import java.awt.image.BufferedImage;
import java.io.File;
import java.io.IOException;
import java.util.Random;
import java.util.regex.Matcher;
import java.util.regex.Pattern;

/**
 * @author: stefanie-zy
 * @time: 2024/1/29-11:21
 * @description: 默认头像工具类
 */
@Component
@Slf4j
@Schema(name = "工具-默认头像")
public class IcoUtil {

    /**
     * 根据姓名生成头像
     *
     * @param userName 用户姓名
     * @return 头像真实路径
     */
    public static String createImg(String userName) {
        int width = 100;
        int height = 100;
        int nameLength = userName.length();
        String nameWritten;
        // 截取位置
        if (nameLength <= 2) {
            nameWritten = userName;
        } else {
            if (isChinese(userName.substring(0, 1))) {
                nameWritten = userName.substring(nameLength - 1);
            } else {
                nameWritten = userName.substring(0, 2).toUpperCase();
            }
        }
        // 文件真实路径（姓名+时间戳.jpg）
        String fileNameAndPath;
        // 根据服务器判断路径
        String filePath = (!OsUtil.getOs().equals(OsTypeEnum.WINDOWS)) ? FileParamConfig.defaultPath + FileParamConfig.userIcoPath + "/" : "D:\\test\\";
        // 路径校验，没有生成
        FileUtil.checkAndCreateDirectory(filePath);
        fileNameAndPath = filePath + userName + "-" + SystemClock.now() + ".jpg";
        File file = new File(fileNameAndPath);

        // 图片设置
        BufferedImage bi = new BufferedImage(width, height, BufferedImage.TYPE_INT_RGB);
        Graphics2D g2 = (Graphics2D) bi.getGraphics();
        g2.setRenderingHint(RenderingHints.KEY_TEXT_ANTIALIASING, RenderingHints.VALUE_TEXT_ANTIALIAS_ON);
        g2.setBackground(getRandomColor());
        g2.clearRect(0, 0, width, height);
        g2.setPaint(Color.WHITE);

        // 字体
        Font font;
        if (nameWritten.length() >= 2) {
            font = new Font("微软雅黑", Font.PLAIN, 30);
            g2.setFont(font);
            String firstWritten = nameWritten.substring(0, 1);
            String secondWritten = nameWritten.substring(1, 2);
            if (isChinese(firstWritten) && isChinese(secondWritten)) {
                g2.drawString(nameWritten, 20, 60);
            } else if (isChinese(firstWritten) && !isChinese(secondWritten)) {
                g2.drawString(nameWritten, 27, 60);
            } else {
                nameWritten = nameWritten.substring(0, 1);
            }
        }
        if (nameWritten.length() == 1) {
            if (isChinese(nameWritten)) {
                font = new Font("微软雅黑", Font.PLAIN, 50);
                g2.setFont(font);
                g2.drawString(nameWritten, 25, 70);
            } else {
                font = new Font("微软雅黑", Font.PLAIN, 55);
                g2.setFont(font);
                g2.drawString(nameWritten.toUpperCase(), 33, 67);
            }
        }
        BufferedImage rounded = makeRoundedCorner(bi);
        try {
            ImageIO.write(rounded, "png", file);
        } catch (IOException e) {
            log.error("The image conversion in the icon tool class is abnormal. The exception message is :{}", e.getMessage());
            e.printStackTrace();
            return null;
        }
        return fileNameAndPath;
    }

    /**
     * 判断是否位中文
     *
     * @param userName 姓名
     */
    private static boolean isChinese(String userName) {
        String regEx = "[\\u4e00-\\u9fa5]+";
        Pattern p = Pattern.compile(regEx);
        Matcher m = p.matcher(userName);
        return m.find();
    }

    /**
     * 获取随机背景色
     */
    private static Color getRandomColor() {
        String[] beautifulColors = new String[]{"232,221,203", "205,179,128", "3,101,100", "3,54,73", "3,22,52", "237,222,139", "251,178,23", "96,143,159", "1,77,103", "254,67,101", "252,157,154", "249,205,173", "200,200,169", "131,175,155", "229,187,129", "161,23,21", "34,8,7", "118,77,57", "17,63,61", "60,79,57", "95,92,51", "179,214,110", "248,147,29", "227,160,93", "178,190,126", "114,111,238", "56,13,49", "89,61,67", "250,218,141", "3,38,58", "179,168,150", "222,125,44", "20,68,106", "130,57,53", "137,190,178", "201,186,131", "222,211,140", "222,156,83", "23,44,60", "39,72,98", "153,80,84", "217,104,49", "230,179,61", "174,221,129", "107,194,53", "6,128,67", "38,157,128", "178,200,187", "69,137,148", "117,121,71", "114,83,52", "87,105,60", "82,75,46", "171,92,37", "100,107,48", "98,65,24", "54,37,17", "137,157,192", "250,227,113", "29,131,8", "220,87,18", "29,191,151", "35,235,185", "213,26,33", "160,191,124", "101,147,74", "64,116,52", "255,150,128", "255,94,72", "38,188,213", "167,220,224", "1,165,175", "179,214,110", "248,147,29", "230,155,3", "209,73,78", "62,188,202", "224,160,158", "161,47,47", "0,90,171", "107,194,53", "174,221,129", "6,128,67", "38,157,128", "201,138,131", "220,162,151", "137,157,192", "175,215,237", "92,167,186", "255,66,93", "147,224,255", "247,68,97", "185,227,217"};
        int len = beautifulColors.length;
        Random random = new Random();
        String[] color = beautifulColors[random.nextInt(len)].split(",");
        return new Color(Integer.parseInt(color[0]), Integer.parseInt(color[1]), Integer.parseInt(color[2]));
    }


    /**
     * 图片圆角处理
     *
     * @param image 原始图片
     */
    private static BufferedImage makeRoundedCorner(BufferedImage image) {
        int w = image.getWidth();
        int h = image.getHeight();
        BufferedImage output = new BufferedImage(w, h, BufferedImage.TYPE_INT_ARGB);
        Graphics2D g2 = output.createGraphics();
        g2.setComposite(AlphaComposite.Src);
        g2.setRenderingHint(RenderingHints.KEY_ANTIALIASING, RenderingHints.VALUE_ANTIALIAS_ON);
        g2.setColor(Color.WHITE);
        g2.fill(new RoundRectangle2D.Float(0, 0, w, h, 99, 99));
        g2.setComposite(AlphaComposite.SrcAtop);
        g2.drawImage(image, 0, 0, null);
        g2.dispose();
        return output;
    }
}

